新增Class的加载缓存,解决频繁加载Class会使jvm的方法区空间不足导致OOM的问题;
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@ -1425,7 +1425,8 @@ Tips: 历史版本(V1.3.x)目前已经Release至稳定版本, 进入维护阶段
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- 11、执行器回调日志落盘方案复用RPC序列化方案,并移除Jackson依赖;
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- 12、任务支持更换绑定执行器,方便任务分组转移和管理;
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- 13、执行器热部署时JobHandler重新初始化,修复由此导致的 "jobhandler naming conflicts." 问题;
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- 14、[迭代中]任务线程隔离:
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- 14、新增Class的加载缓存,解决频繁加载Class会使jvm的方法区空间不足导致OOM的问题;
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- 15、[迭代中]任务线程隔离:
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- 执行器测异步响应,不存在阻塞不需要隔离;
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- 调度中心共用单一调度线程池,可能导致调度阻塞需要线程隔离;调度线程池拆分为Fast/Slow两个,针对调度较慢的执行器地址请求,降级使用Slow线程池;考虑是否可以任务级隔离线程池;
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@ -113,7 +113,7 @@ public class ExecutorBizImpl implements ExecutorBiz {
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// valid handler
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if (jobHandler == null) {
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try {
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IJobHandler originJobHandler = GlueFactory.getInstance().loadNewInstance(triggerParam.getJobId(), triggerParam.getGlueSource());
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IJobHandler originJobHandler = GlueFactory.getInstance().loadNewInstance(triggerParam.getGlueSource());
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jobHandler = new GlueJobHandler(originJobHandler, triggerParam.getGlueUpdatetime());
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} catch (Exception e) {
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logger.error(e.getMessage(), e);
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@ -33,9 +33,7 @@ public class GlueFactory {
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* groovy class loader
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*/
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private GroovyClassLoader groovyClassLoader = new GroovyClassLoader();
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private static final ConcurrentHashMap<String, Class<?>> CLASS_CACHE = new ConcurrentHashMap<>();
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private static final ConcurrentHashMap<Long, String> JOBID_MD5KEY_CACHE = new ConcurrentHashMap<>();
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private ConcurrentHashMap<String, Class<?>> CLASS_CACHE = new ConcurrentHashMap<>();
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/**
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* load new instance, prototype
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@ -44,9 +42,9 @@ public class GlueFactory {
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* @return
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* @throws Exception
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*/
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public IJobHandler loadNewInstance(long jobId, String codeSource) throws Exception{
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public IJobHandler loadNewInstance(String codeSource) throws Exception{
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if (codeSource!=null && codeSource.trim().length()>0) {
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Class<?> clazz = getCodeSourceClass(jobId, codeSource);
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Class<?> clazz = getCodeSourceClass(codeSource);
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if (clazz != null) {
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Object instance = clazz.newInstance();
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if (instance!=null) {
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@ -62,6 +60,22 @@ public class GlueFactory {
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}
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throw new IllegalArgumentException(">>>>>>>>>>> xxl-glue, loadNewInstance error, instance is null");
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}
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private Class<?> getCodeSourceClass(String codeSource){
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try {
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// md5
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byte[] md5 = MessageDigest.getInstance("MD5").digest(codeSource.getBytes());
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String md5Str = new BigInteger(1, md5).toString(16);
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Class<?> clazz = CLASS_CACHE.get(md5Str);
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if(clazz == null){
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clazz = groovyClassLoader.parseClass(codeSource);
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CLASS_CACHE.putIfAbsent(md5Str, clazz);
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}
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return clazz;
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} catch (Exception e) {
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return groovyClassLoader.parseClass(codeSource);
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}
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}
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/**
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* inject service of bean field
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@ -72,28 +86,4 @@ public class GlueFactory {
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// do something
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}
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private Class<?> getCodeSourceClass(long jobId, String codeSource){
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try {
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MessageDigest md = MessageDigest.getInstance("MD5");
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byte[] md5 = md.digest(codeSource.getBytes());
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BigInteger no = new BigInteger(1, md5);
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String md5Str = no.toString(16);
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Class<?> clazz = CLASS_CACHE.get(md5Str);
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if(clazz == null){
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clazz = groovyClassLoader.parseClass(codeSource);
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Class<?> preClazz = CLASS_CACHE.putIfAbsent(md5Str, clazz);
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// 如果代碼有變化則刪除之前class緩存
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if(preClazz == null){
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String preMd5 = JOBID_MD5KEY_CACHE.put(jobId, md5Str);
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if(preMd5 != null){
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CLASS_CACHE.remove(preMd5);
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}
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}
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}
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return clazz;
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} catch (Exception e) {
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return groovyClassLoader.parseClass(codeSource);
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}
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}
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}
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